Fastener



NovQl, 1927. I 1,647,778

F. S. CARR FASTENER Filed June 14. '1924 liv/vena?.- Zf' ed 15.000212'.

Cil

Patented Nov. l, 1927.

UNITED STATES PATENT OFFICE.

FRED S. CARR, 0F NEWTON, .MASSACHUSETTS, ASSIGNGR TO CARR FASTENER COM- PANY, 0F CAMBRIDGE, MASSACHUSETTS, A CORPORATION OF MAINE.

FASTENER.

Application filed .Tune 14, 1924. Serial No. 719,926.

This invention aims topi-Ovidel an improved separablefastener.

In the drawings, which show one illustrative embodiment of my invention i- Figurel is a front elevation of a preferred form of my'invention;

Fig. 2 is a rear elevation of thestud;

Fig. 3 is a section partly in elevation on the line 3-3 of Fig. 1;

Fig. 4 is a section similar to Fig. 3, but showing the locking part in unlocking position and showing the attaching screw in eleva'tion;

Fig. 5 is a front elevation of the preferred form of socket;

Fig. 6 is a section on the line 6-7-6 of Fig. 3; and l Fig.. 7"is a section 'on the' line 7-7of Fig. 4.

Referring to the preferred form of my invention selected for illustrative purposes, l have shown a stud 'secured to a 'curtain 9.

The means for Vattaching the stud to the curtain 9 include a plurality of attaching prongsll presented by a front plate. 13

which pass through the curtain and are clinched over the back plate 15, substantially as described and illustrated in my copendinglapplication Serial No. 719,917, iled herewit v Y y The stud also presents a one-piece head, neck, shank 'and base member 17 slotted to the base to permit contraction and expansion of the head. This member 17 is secured to the front plate 'substantially as describedv and illustrated in the above-mentioned application.

Cooperating with the stud and assembled therewith, I have provided .a pull-button member 21 presenting at itsV inner end a sloping head 23 normally urged into engagement with t-he reversely bent portions 25 of the head of the stud by a spring 27, thereby to prevent contraction of the head. At the other end-of the pull-button 21. I have provided a knob or button 31 normally seated against the front plate and which may be manually pulled to disengage the sloping head 23 from the'reverselybent portions of the stud, thereby to permit contraction of the head, neck and shank Vofthe st-ud when engaging or disengaging a socket.

The preferred form, 'of socket is preferably of the flush type which must be countersunk into the body 39 ofthe automobile so as to present little or no projection beyond the surface of the body 39 of the car. The socket is lpreferably held in position rela# tive to the body 39 of the' car by an attaching screw 41 having a hexagonal head 43 secured to the socket as illustrated. lThe socket preferably includes two tubular fparts 45 and 49, fitting one inside the other and being preferably hexagonal in cross-section to prevent relative rotation between them.

The outer part 45 presentsa hexagonalv flange 47, which seats against the outer 'face of the body 39 of the car toc'onceal the socket-receiving recess 48 located in the bodyof the car, thereby to present a neat'and finished appearance to the car' when Vthe socket is attached thereto.

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.The inner part 49 presents a stud-receiveryl of the part 49 so that prongs 53 extending from the end of the .part 49, pass through slots 55 in the head 43 of the screw. Thereafter the prongs 53 are bent inwardly into the depression 57 in the face of the head of the screw (Figs. 3, 4 and 6). Thus the prongs '53 hold the head'of the screw against the inner end of the part 49 to prevent axial movement of the screw relative to the' part49. The cooperation between the slots 55 and the prongs 53 prevent relative turning between the part 49 and the screw. vThe final step in assembling the socket is to force the above-mentioned parts,

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ery of the flange 4:7 and rotative motion is applied thereto to attach the socket to the body 39. of the car.

To effect engagement of the stud with the socket, the button 3l must first be pulled outwardly relative to the socket to disengage the head 23 from the reversely bent portions 25 to permit contraction of the head. Then the stud is urged into engagement with the stud-receiving aperture and at the same time the head of the stud engages the sealing disc 51 and urges it inwardly against the pressure of the spring to permit entrance of the head of the stud with the socket. To prevent the socket-engaging part from entering too far into the socket, l have provided an annular Shoulder 6() located on the socketengaging part of the stud.

After the stud has become engaged with the socket, the pull-button 3l is released and the spring 27 forces the sloping head 23 into engagement with the reversely bent portions, thereby preventing accidental separation of the stud from the socket.

Therspring 27 must be strong enough to overcome the pressure of the spring 52 because the sloping head projects beyond the end of the stud and moves the sealing disc inwardly when fully engaged with the reversely bent portions 25, as best illustrated in Fig. 3. v

Separation of the stu-d from the socket may be 'effected by pulling upon the button to disengage the sloping head 23 from the reversely bent portions 25. The head of the stud is then free to contract and may be separated from the stud-receiving aperture by an added pull on the button or it may be separated by a pull at the lower edge of the curtain at the same time holding the sloping head out of engagement with the head of the stud.

A While I have shown and described a preferred form of one embodiment of my invention, -it will be understood that changes involving omission, alteration, substitution and reversal of parts, and even changes in the mode of operation, may be made without departing from the scope of my invention, which is best defined in the following claims.

Claims.

1. A stud and socket fastener comprising, in combination, a socket secured to a rigid support and 'presenting a stud-receiving aperture, a cooperating stud presenting a resilient head for passage within said aperture and an aperture of substantial diameter formed in the head of said stud, a locking member. carried by said stud, a spring' also assembled with said stud, said spring normally pressing said locking means' into said aperture in said head to prevent contraction thereof and a pull button carried by said stud and located at the opposite end thereof from said resilient head, said pull-button being operatively connected to said locking means for shifting said` locking means into unlocked position, thereby to permit contraction of the stud during engagement with and disen= gagement from a socket, said spring adapted automatically to press said locking means into the aperture in said head when saidV button is released.

2. A stud for a separable fastener including a head, neck and shank portion contractible and expansible for engagement with a socket, a locking member located adjacent to the free end of said head, automatically acting means for moving said locking member toward said head for engagementtherewith to prevent contraction thereof, and manually operable pull-button means loperatively connected to said locking member and located at t-he opposite end of the stud from that end at Awhich the locking member is located for moving said locking member toward said shank portionV to permit contraction of said head, said locking member, automatically acting means and pull-button forming part of the stud assembly.

3. A stud and socket fastener comprising, in combination, a socket presenting a' studreceiving aperture, a spring-pressed sealing disc normally closing said aperture, a jco-V operating stud for engagement in said aperture a locking member presented by said stud for resilient engagement with said sealing disc when said stud is engaged in said aperture, and resilient means also forinin'gpart of the stud assembly, said resilient means being operable to retain said locking member in locking position against the pressure of said spring-pressed sealing disc and lock displacing button means presented at the opposite end of the stud from the end at which the locking member is presented.

4. A stud and socket fastener comprising, in combination, a socket presenting a studreceiving aperture, a sealing disc normally urged into aperture-closing position by a relatively weak spring, acooperating stud having a head contractible andeXpansible for engagement with said aperture, locking means normally urged into locking position by a relatively strong spring,` said locking means adapted, when said head isengaged in said aperture, to resiliently engage Ysaid sealing disc, said locking means being retained in locking position by said strong spring which overcomes the resistance 'of said weak spring located in said socket and manually operable button means for shifting said locking meansV to permit contraction of said head, said locking means, strong spring and button means forming part of the stud assembly.

5. A socket for a separable fastener comprising, in combination, a casing non-cylindrical in cross-section, a second casing of substantially the same cross-section adapted to fit into said first mentioned casing and an attaching member having a head of the same cross-section as said first mentioned casing, said head interposed between said casings when said casings are' in assembled relation.

6. A socket for a separable fastener including a casing, polygonal in cross-section, a second casing, adapted to fit closely within said first mentioned casing and presenting a stud-receiving aperture, an attaching screw secured thereto,v and resilient aperture-closing means interposed between said aperture and said attaching screw.

7. A flush-type socket including an outer casing having' a plurality of straight sides and presenting a tool-receiving flange at the outer end thereof, an inner stud-receiving casing adapted to be driven into said outer casing, and an attaching screw secured in a iixed relation between the inner ends of said casings, thereby to be rotated with saidcasings when a suitable tool is secured to said tool-receiving flange.

of substantially the same cross-section asv said tubular parts and a plurality of prongs projecting from the inner tubular part and engaged in slots in said head to hold the parts of said socket in assembled relation prior to forcing said inner tubular part into engagement with the outer tubular part.

9. A ilush-type socket for a separable fastener including a casing having two noncylindrical tubular parts non-rotative relative to each other and an attaching element having anon-circular head held between said non-cylindrical casing parts to prevent relative turning movement between said casing and said attaching element during attachment of said socket to a carrying medium.

In testimony whereof, I have signed my name to this specication.

FRED S. CARR. 

